prepared to build

client/platforms/linux/linuxappimageprovider.cpp

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "linuxappimageprovider.h"
+#include "logger.h"
+#include "leakdetector.h"
+
+#include <QDir>
+#include <QDirIterator>
+#include <QProcessEnvironment>
+#include <QString>
+#include <QSettings>
+#include <QIcon>
+
+constexpr const char* PIXMAP_FALLBACK_PATH = "/usr/share/pixmaps/";
+constexpr const char* DESKTOP_ICON_LOCATION = "/usr/share/icons/";
+
+namespace {
+Logger logger(LOG_CONTROLLER, "LinuxAppImageProvider");
+}
+
+LinuxAppImageProvider::LinuxAppImageProvider(QObject* parent)
+    : AppImageProvider(parent, QQuickImageProvider::Image,
+                       QQmlImageProviderBase::ForceAsynchronousImageLoading) {
+  MVPN_COUNT_CTOR(LinuxAppImageProvider);
+
+  QStringList searchPaths = QIcon::fallbackSearchPaths();
+
+  QProcessEnvironment pe = QProcessEnvironment::systemEnvironment();
+  if (pe.contains("XDG_DATA_DIRS")) {
+    QStringList parts = pe.value("XDG_DATA_DIRS").split(":");
+    for (const QString& part : parts) {
+      addFallbackPaths(part + "/icons", searchPaths);
+    }
+  } else {
+    addFallbackPaths(DESKTOP_ICON_LOCATION, searchPaths);
+  }
+
+  if (pe.contains("HOME")) {
+    addFallbackPaths(pe.value("HOME") + "/.local/share/icons", searchPaths);
+  }
+
+  searchPaths << PIXMAP_FALLBACK_PATH;
+  QIcon::setFallbackSearchPaths(searchPaths);
+}
+
+LinuxAppImageProvider::~LinuxAppImageProvider() {
+  MVPN_COUNT_DTOR(LinuxAppImageProvider);
+}
+
+void LinuxAppImageProvider::addFallbackPaths(const QString& iconDir,
+                                             QStringList& searchPaths) {
+  searchPaths << iconDir;
+
+  QDirIterator iter(iconDir, QDir::Dirs | QDir::NoDotAndDotDot);
+  while (iter.hasNext()) {
+    QFileInfo fileinfo(iter.next());
+    logger.debug() << "Adding QIcon fallback:" << fileinfo.absoluteFilePath();
+    searchPaths << fileinfo.absoluteFilePath();
+  }
+}
+
+// from QQuickImageProvider
+QImage LinuxAppImageProvider::requestImage(const QString& id, QSize* size,
+                                           const QSize& requestedSize) {
+  QSettings entry(id, QSettings::IniFormat);
+  entry.beginGroup("Desktop Entry");
+  QString name = entry.value("Icon").toString();
+
+  QIcon icon = QIcon::fromTheme(name);
+  QPixmap pixmap = icon.pixmap(requestedSize);
+  size->setHeight(pixmap.height());
+  size->setWidth(pixmap.width());
+  logger.debug() << "Loaded icon" << icon.name() << "size:" << pixmap.width()
+                 << "x" << pixmap.height();
+
+  return pixmap.toImage();
+}